Hi

 



A: 3y+x=6  OR y = (-1/3)x+2    |Slope m = (-1/3)

B: y=3x+2                      |Slope m = 3/1

C: 3x+y=0  OR y = -3x          |Slope m = -3

Line A and B represent perpendicular lines

(slopes are negative reciprocals of one another, that is (-1/3)*3/1 = -1 

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